blob: 9546dd360961ada14fa5ae301416888caab57b9f [file] [log] [blame] [edit]
#include <elf.h>
#include <link.h>
#include "pthread_impl.h"
#include "libc.h"
#define AUX_CNT 38
extern weak hidden const size_t _DYNAMIC[];
static int static_dl_iterate_phdr(int(*callback)(struct dl_phdr_info *info, size_t size, void *data), void *data)
{
unsigned char *p;
ElfW(Phdr) *phdr, *tls_phdr=0;
size_t base = 0;
size_t n;
struct dl_phdr_info info;
size_t i, aux[AUX_CNT] = {0};
for (i=0; libc.auxv[i]; i+=2)
if (libc.auxv[i]<AUX_CNT) aux[libc.auxv[i]] = libc.auxv[i+1];
for (p=(void *)aux[AT_PHDR],n=aux[AT_PHNUM]; n; n--,p+=aux[AT_PHENT]) {
phdr = (void *)p;
if (phdr->p_type == PT_PHDR)
base = aux[AT_PHDR] - phdr->p_vaddr;
if (phdr->p_type == PT_DYNAMIC && _DYNAMIC)
base = (size_t)_DYNAMIC - phdr->p_vaddr;
if (phdr->p_type == PT_TLS)
tls_phdr = phdr;
}
info.dlpi_addr = base;
info.dlpi_name = "/proc/self/exe";
info.dlpi_phdr = (void *)aux[AT_PHDR];
info.dlpi_phnum = aux[AT_PHNUM];
info.dlpi_adds = 0;
info.dlpi_subs = 0;
if (tls_phdr) {
info.dlpi_tls_modid = 1;
info.dlpi_tls_data = __tls_get_addr((tls_mod_off_t[]){1,0});
} else {
info.dlpi_tls_modid = 0;
info.dlpi_tls_data = 0;
}
return (callback)(&info, sizeof (info), data);
}
weak_alias(static_dl_iterate_phdr, dl_iterate_phdr);